
wwd footwearBirkenstock2026-08-04
After Viral Repetto and Sacai Collabs, Birkenstock Is Back With Ader Error on Second Collection
What to know
ClosetKept AI- Birkenstock collaborates with Ader Error on second collection
- Collection features Boston Cap and Boston Flap silhouettes
- Boston Flap includes Ader Error's signature zigzag embroidery
- Release date: August 3, 2026



